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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/175976">175976</a></dd>
<dt>Author</dt> <dd>eric.carlson@apple.com</dd>
<dt>Date</dt> <dd>2014-11-11 14:03:15 -0800 (Tue, 11 Nov 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>[iOS] cleanup wireless route monitoring
https://bugs.webkit.org/show_bug.cgi?id=138614

Reviewed by Jer Noble.

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::clearMediaPlayer): Add logging.
(WebCore::HTMLMediaElement::removeEventListener): Ditto.
(WebCore::HTMLMediaElement::createMediaPlayer): Ditto.

* platform/audio/ios/MediaSessionManagerIOS.mm:
(WebCore::MediaSessionManageriOS::resetRestrictions): Add logging.
(WebCore::MediaSessionManageriOS::configureWireLessTargetMonitoring): Ditto.
(WebCore::MediaSessionManageriOS::updateNowPlayingInfo): Ditto.
(-[WebMediaSessionHelper initWithCallback:]): Ditto.
(-[WebMediaSessionHelper dealloc]): Always deallocate volume view and routing controller
    on the main thread.
(-[WebMediaSessionHelper clearCallback]): Add logging.
(-[WebMediaSessionHelper hasWirelessTargetsAvailable]): Ditto.
(-[WebMediaSessionHelper startMonitoringAirPlayRoutes]): Always call routing controller on
    the main thread.
(-[WebMediaSessionHelper stopMonitoringAirPlayRoutes]): Ditto.
(-[WebMediaSessionHelper interruption:]): Add logging.
(-[WebMediaSessionHelper applicationWillEnterForeground:]): Ditto.
(-[WebMediaSessionHelper applicationDidBecomeActive:]): Ditto.
(-[WebMediaSessionHelper applicationWillResignActive:]): Ditto.
(-[WebMediaSessionHelper wirelessRoutesAvailableDidChange:]): Ditto.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorehtmlHTMLMediaElementcpp">trunk/Source/WebCore/html/HTMLMediaElement.cpp</a></li>
<li><a href="#trunkSourceWebCoreplatformaudioiosMediaSessionManagerIOSmm">trunk/Source/WebCore/platform/audio/ios/MediaSessionManagerIOS.mm</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (175975 => 175976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2014-11-11 22:02:16 UTC (rev 175975)
+++ trunk/Source/WebCore/ChangeLog        2014-11-11 22:03:15 UTC (rev 175976)
</span><span class="lines">@@ -1,3 +1,33 @@
</span><ins>+2014-11-11  Eric Carlson  &lt;eric.carlson@apple.com&gt;
+
+        [iOS] cleanup wireless route monitoring
+        https://bugs.webkit.org/show_bug.cgi?id=138614
+
+        Reviewed by Jer Noble.
+
+        * html/HTMLMediaElement.cpp:
+        (WebCore::HTMLMediaElement::clearMediaPlayer): Add logging.
+        (WebCore::HTMLMediaElement::removeEventListener): Ditto.
+        (WebCore::HTMLMediaElement::createMediaPlayer): Ditto.
+
+        * platform/audio/ios/MediaSessionManagerIOS.mm:
+        (WebCore::MediaSessionManageriOS::resetRestrictions): Add logging.
+        (WebCore::MediaSessionManageriOS::configureWireLessTargetMonitoring): Ditto.
+        (WebCore::MediaSessionManageriOS::updateNowPlayingInfo): Ditto.
+        (-[WebMediaSessionHelper initWithCallback:]): Ditto.
+        (-[WebMediaSessionHelper dealloc]): Always deallocate volume view and routing controller
+            on the main thread.
+        (-[WebMediaSessionHelper clearCallback]): Add logging.
+        (-[WebMediaSessionHelper hasWirelessTargetsAvailable]): Ditto.
+        (-[WebMediaSessionHelper startMonitoringAirPlayRoutes]): Always call routing controller on
+            the main thread.
+        (-[WebMediaSessionHelper stopMonitoringAirPlayRoutes]): Ditto.
+        (-[WebMediaSessionHelper interruption:]): Add logging.
+        (-[WebMediaSessionHelper applicationWillEnterForeground:]): Ditto.
+        (-[WebMediaSessionHelper applicationDidBecomeActive:]): Ditto.
+        (-[WebMediaSessionHelper applicationWillResignActive:]): Ditto.
+        (-[WebMediaSessionHelper wirelessRoutesAvailableDidChange:]): Ditto.
+
</ins><span class="cx"> 2014-11-11  Myles C. Maxfield  &lt;mmaxfield@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Unreviewd iOS build fix
</span></span></pre></div>
<a id="trunkSourceWebCorehtmlHTMLMediaElementcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/html/HTMLMediaElement.cpp (175975 => 175976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/html/HTMLMediaElement.cpp        2014-11-11 22:02:16 UTC (rev 175975)
+++ trunk/Source/WebCore/html/HTMLMediaElement.cpp        2014-11-11 22:03:15 UTC (rev 175976)
</span><span class="lines">@@ -4651,6 +4651,8 @@
</span><span class="cx"> 
</span><span class="cx"> void HTMLMediaElement::clearMediaPlayer(int flags)
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;HTMLMediaElement::clearMediaPlayer(%p) - flags = %x&quot;, this, (unsigned)flags);
+
</ins><span class="cx"> #if USE(PLATFORM_TEXT_TRACK_MENU)
</span><span class="cx">     if (platformTextTrackMenu()) {
</span><span class="cx">         m_platformMenu-&gt;setClient(0);
</span><span class="lines">@@ -4855,6 +4857,7 @@
</span><span class="cx">         return false;
</span><span class="cx"> 
</span><span class="cx">     bool didRemoveLastAvailabilityChangedListener = !hasEventListeners(eventNames().webkitplaybacktargetavailabilitychangedEvent);
</span><ins>+    LOG(Media, &quot;HTMLMediaElement::removeEventListener(%p) - removed last listener = %s&quot;, this, boolString(didRemoveLastAvailabilityChangedListener));
</ins><span class="cx">     if (didRemoveLastAvailabilityChangedListener)
</span><span class="cx">         m_mediaSession-&gt;setHasPlaybackTargetAvailabilityListeners(*this, false);
</span><span class="cx"> 
</span><span class="lines">@@ -5357,6 +5360,8 @@
</span><span class="cx"> 
</span><span class="cx"> void HTMLMediaElement::createMediaPlayer()
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;HTMLMediaElement::createMediaPlayer(%p)&quot;, this);
+
</ins><span class="cx"> #if ENABLE(WEB_AUDIO)
</span><span class="cx">     if (m_audioSourceNode)
</span><span class="cx">         m_audioSourceNode-&gt;lock();
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformaudioiosMediaSessionManagerIOSmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/audio/ios/MediaSessionManagerIOS.mm (175975 => 175976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/audio/ios/MediaSessionManagerIOS.mm        2014-11-11 22:02:16 UTC (rev 175975)
+++ trunk/Source/WebCore/platform/audio/ios/MediaSessionManagerIOS.mm        2014-11-11 22:03:15 UTC (rev 175976)
</span><span class="lines">@@ -126,6 +126,8 @@
</span><span class="cx"> 
</span><span class="cx"> void MediaSessionManageriOS::resetRestrictions()
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;MediaSessionManageriOS::resetRestrictions&quot;);
+
</ins><span class="cx">     MediaSessionManager::resetRestrictions();
</span><span class="cx"> 
</span><span class="cx">     static wkDeviceClass deviceClass = iosDeviceClass();
</span><span class="lines">@@ -166,6 +168,8 @@
</span><span class="cx">         }
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    LOG(Media, &quot;MediaSessionManageriOS::configureWireLessTargetMonitoring - requiresMonitoring = %s&quot;, requiresMonitoring ? &quot;true&quot; : &quot;false&quot;);
+
</ins><span class="cx">     if (requiresMonitoring)
</span><span class="cx">         [m_objcObserver startMonitoringAirPlayRoutes];
</span><span class="cx">     else
</span><span class="lines">@@ -187,6 +191,8 @@
</span><span class="cx">     
</span><span class="cx"> void MediaSessionManageriOS::updateNowPlayingInfo()
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;MediaSessionManageriOS::updateNowPlayingInfo&quot;);
+
</ins><span class="cx">     MPNowPlayingInfoCenter *nowPlaying = (MPNowPlayingInfoCenter *)[getMPNowPlayingInfoCenterClass() defaultCenter];
</span><span class="cx">     const MediaSession* currentSession = this-&gt;currentSession();
</span><span class="cx">     
</span><span class="lines">@@ -224,6 +230,8 @@
</span><span class="cx"> 
</span><span class="cx"> - (id)initWithCallback:(MediaSessionManageriOS*)callback
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper initWithCallback]&quot;);
+
</ins><span class="cx">     if (!(self = [super init]))
</span><span class="cx">         return nil;
</span><span class="cx">     
</span><span class="lines">@@ -249,17 +257,38 @@
</span><span class="cx"> 
</span><span class="cx"> - (void)dealloc
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper dealloc]&quot;);
+
+    if (!isMainThread()) {
+        auto volumeView = WTF::move(_volumeView);
+        auto routingController = WTF::move(_airPlayPresenceRoutingController);
+
+        callOnMainThread([volumeView, routingController] () mutable {
+            LOG(Media, &quot;-[WebMediaSessionHelper dealloc] - dipatched to MainThread&quot;);
+
+            volumeView.clear();
+
+            if (!routingController)
+                return;
+
+            [routingController setDiscoveryMode:MPRouteDiscoveryModeDisabled];
+            routingController.clear();
+        });
+    }
+
</ins><span class="cx">     [[NSNotificationCenter defaultCenter] removeObserver:self];
</span><span class="cx">     [super dealloc];
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> - (void)clearCallback
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper clearCallback]&quot;);
</ins><span class="cx">     _callback = nil;
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> - (BOOL)hasWirelessTargetsAvailable
</span><span class="cx"> {
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper hasWirelessTargetsAvailable]&quot;);
</ins><span class="cx">     return [_volumeView areWirelessRoutesAvailable];
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -268,8 +297,18 @@
</span><span class="cx">     if (_airPlayPresenceRoutingController)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    _airPlayPresenceRoutingController = adoptNS([[getMPAVRoutingControllerClass() alloc] initWithName:@&quot;WebCore - HTML media element checking for AirPlay route presence&quot;]);
-    [_airPlayPresenceRoutingController setDiscoveryMode:MPRouteDiscoveryModePresence];
</del><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper startMonitoringAirPlayRoutes]&quot;);
+
+    RetainPtr&lt;WebMediaSessionHelper&gt; strongSelf = self;
+    callOnMainThread([strongSelf] () {
+        LOG(Media, &quot;-[WebMediaSessionHelper startMonitoringAirPlayRoutes] - dipatched to MainThread&quot;);
+
+        if (strongSelf-&gt;_airPlayPresenceRoutingController)
+            return;
+
+        strongSelf-&gt;_airPlayPresenceRoutingController = adoptNS([[getMPAVRoutingControllerClass() alloc] initWithName:@&quot;WebCore - HTML media element checking for AirPlay route presence&quot;]);
+        [strongSelf-&gt;_airPlayPresenceRoutingController setDiscoveryMode:MPRouteDiscoveryModePresence];
+    });
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> - (void)stopMonitoringAirPlayRoutes
</span><span class="lines">@@ -277,8 +316,18 @@
</span><span class="cx">     if (!_airPlayPresenceRoutingController)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    [_airPlayPresenceRoutingController setDiscoveryMode:MPRouteDiscoveryModeDisabled];
-    _airPlayPresenceRoutingController = nil;
</del><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper stopMonitoringAirPlayRoutes]&quot;);
+
+    RetainPtr&lt;WebMediaSessionHelper&gt; strongSelf = self;
+    callOnMainThread([strongSelf] () {
+        LOG(Media, &quot;-[WebMediaSessionHelper stopMonitoringAirPlayRoutes] - dipatched to MainThread&quot;);
+
+        if (!strongSelf-&gt;_airPlayPresenceRoutingController)
+            return;
+
+        [strongSelf-&gt;_airPlayPresenceRoutingController setDiscoveryMode:MPRouteDiscoveryModeDisabled];
+        strongSelf-&gt;_airPlayPresenceRoutingController = nil;
+    });
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> - (void)interruption:(NSNotification *)notification
</span><span class="lines">@@ -289,6 +338,8 @@
</span><span class="cx">     NSUInteger type = [[[notification userInfo] objectForKey:AVAudioSessionInterruptionTypeKey] unsignedIntegerValue];
</span><span class="cx">     MediaSession::EndInterruptionFlags flags = MediaSession::NoFlags;
</span><span class="cx"> 
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper interruption] - type = %i&quot;, (int)type);
+
</ins><span class="cx">     if (type == AVAudioSessionInterruptionTypeEnded &amp;&amp; [[[notification userInfo] objectForKey:AVAudioSessionInterruptionOptionKey] unsignedIntegerValue] == AVAudioSessionInterruptionOptionShouldResume)
</span><span class="cx">         flags = MediaSession::MayResumePlaying;
</span><span class="cx"> 
</span><span class="lines">@@ -311,6 +362,8 @@
</span><span class="cx">     if (!_callback)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper applicationWillEnterForeground]&quot;);
+
</ins><span class="cx">     WebThreadRun(^{
</span><span class="cx">         if (!_callback)
</span><span class="cx">             return;
</span><span class="lines">@@ -326,6 +379,8 @@
</span><span class="cx">     if (!_callback)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper applicationDidBecomeActive]&quot;);
+
</ins><span class="cx">     WebThreadRun(^{
</span><span class="cx">         if (!_callback)
</span><span class="cx">             return;
</span><span class="lines">@@ -340,7 +395,9 @@
</span><span class="cx"> 
</span><span class="cx">     if (!_callback)
</span><span class="cx">         return;
</span><del>-    
</del><ins>+
+    LOG(Media, &quot;-[WebMediaSessionHelper applicationWillResignActive]&quot;);
+
</ins><span class="cx">     WebThreadRun(^{
</span><span class="cx">         if (!_callback)
</span><span class="cx">             return;
</span><span class="lines">@@ -356,6 +413,8 @@
</span><span class="cx">     if (!_callback)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><ins>+    LOG(Media, &quot;-[WebMediaSessionHelper wirelessRoutesAvailableDidChange]&quot;);
+
</ins><span class="cx">     WebThreadRun(^{
</span><span class="cx">         if (!_callback)
</span><span class="cx">             return;
</span></span></pre>
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